dm_crc_sour...d_start_dprx(9)

💅 dm_crc_source_should_start_dprx — should we be calling drm_dp_start_crc() or nah?

okay bestie, welcome to the Kernel API Manual, section 9, where we answer the question that's been living rent-free in your head: should this CRC thing actually start? 🎀

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✨ SYNOPSIS ✨

bool dm_crc_source_should_start_dprx (enum amdgpu_dm_pipe_crc_source
       source , enum amdgpu_dm_pipe_crc_source cur_crc_src );

like, it takes two things and hands you back a bool. that's the whole vibe. 🦋

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🌸 ARGUMENTS 🌸

• source — the CRC source you're asking for. your request, your dream, your truth. ✨
• cur_crc_src — the CRC source that's already happening right now. the current situation. the present tense. 💅

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🔥 DESCRIPTION 🔥

so here's the tea: this function returns true when CRC is transitioning — specifically when it's going from off to a DPRX source. 🧚

and the exact condition, no cap, is:

!enabled && enable && is_dprx(source)

read that like a group chat: not enabled before, enabled now, and the source is a DPRX one. all three, together, periodt. 👑

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⭐ RETURN ⭐

• true — yes babe, drm_dp_start_crc should be called. go off. 🫶
• false — nope, don't call it. not today. 💀

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🌈 SEE ALSO 🌈

• Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c — literally the whole source file, iykyk 📁
• dm_need_dp_aux(9)
• dm_crc_source_should_stop_dprx(9) — the sibling, the stop to this start 😭
• amdgpu_dm_crtc_handle_crc_irq(9)

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k that's the page!! this lil cutie lives in the Kernel API Manual at ./drivers/gpu/drm/amd/display/..., dated October 2026, and it's giving section 9 energy all day long 💖✨ don't forget to check on dm_crc_source_should_stop_dprx too, she gets lonely 🎀